Vacuum cleaner



FIG. 1 is a front perspective view of a vacuum cleaner showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is an exploded perspective view thereof.

The broken lines in the figures show portions of the vacuum cleaner which form no part of the claimed design. 

CLAIM We claim the ornamental design for a vacuum cleaner, as shown and described. 